/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:14:08,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:14:08,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:14:08,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:14:08,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:14:08,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:14:08,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:14:08,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:14:08,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:14:08,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:14:08,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:14:08,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:14:08,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:14:08,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:14:08,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:14:08,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:14:08,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:14:08,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:14:08,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:14:08,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:14:08,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:14:08,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:14:08,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:14:08,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:14:08,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:14:08,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:14:08,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:14:08,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:14:08,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:14:08,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:14:08,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:14:08,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:14:08,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:14:08,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:14:08,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:14:08,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:14:08,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:14:08,540 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:14:08,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:14:08,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:14:08,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:14:08,544 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:14:08,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:14:08,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:14:08,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:14:08,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:14:08,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:14:08,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:14:08,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:14:08,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:14:08,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:14:08,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:14:08,547 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:14:08,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:14:08,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:14:08,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:14:08,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:14:08,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:14:08,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:08,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:14:08,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:14:08,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:14:08,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:14:08,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:14:08,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:14:08,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:14:08,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:14:08,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:14:08,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:14:08,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:14:08,864 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:14:08,865 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-06 22:14:08,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7e9327a/498ee5a2642e43488979f89ab1e1b7b9/FLAGe71765114 [2019-11-06 22:14:09,613 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:14:09,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-06 22:14:09,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7e9327a/498ee5a2642e43488979f89ab1e1b7b9/FLAGe71765114 [2019-11-06 22:14:09,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7e9327a/498ee5a2642e43488979f89ab1e1b7b9 [2019-11-06 22:14:09,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:14:09,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:14:09,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:09,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:14:09,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:14:09,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:09" (1/1) ... [2019-11-06 22:14:09,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789b381a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09, skipping insertion in model container [2019-11-06 22:14:09,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:09" (1/1) ... [2019-11-06 22:14:09,806 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:14:09,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:14:10,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:10,972 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:14:11,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:11,411 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:14:11,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11 WrapperNode [2019-11-06 22:14:11,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:11,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:14:11,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:14:11,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:14:11,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... [2019-11-06 22:14:11,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:14:11,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:14:11,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:14:11,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:14:11,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:14:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:14:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:14:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:14:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:14:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:14:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:14:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:14:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:14:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:14:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:14:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:14:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:14:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:14:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:14:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:14:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:14:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:14:15,344 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:14:15,345 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:14:15,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:15 BoogieIcfgContainer [2019-11-06 22:14:15,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:14:15,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:14:15,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:14:15,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:14:15,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:09" (1/3) ... [2019-11-06 22:14:15,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1c4251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:15, skipping insertion in model container [2019-11-06 22:14:15,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:11" (2/3) ... [2019-11-06 22:14:15,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1c4251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:15, skipping insertion in model container [2019-11-06 22:14:15,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:15" (3/3) ... [2019-11-06 22:14:15,358 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-06 22:14:15,372 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:14:15,384 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-06 22:14:15,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-06 22:14:15,443 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:14:15,443 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:14:15,443 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:14:15,444 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:14:15,444 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:14:15,444 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:14:15,444 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:14:15,444 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:14:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2019-11-06 22:14:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:14:15,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:15,562 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:15,565 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash 543541410, now seen corresponding path program 1 times [2019-11-06 22:14:15,588 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:15,589 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799138193] [2019-11-06 22:14:15,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:17,729 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 499 [2019-11-06 22:14:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:17,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799138193] [2019-11-06 22:14:17,793 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:17,793 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:17,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841242694] [2019-11-06 22:14:17,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:14:17,800 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:17,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:14:17,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:17,816 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 6 states. [2019-11-06 22:14:19,311 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 505 [2019-11-06 22:14:30,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:30,179 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2019-11-06 22:14:30,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:30,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-06 22:14:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:30,216 INFO L225 Difference]: With dead ends: 2522 [2019-11-06 22:14:30,217 INFO L226 Difference]: Without dead ends: 1594 [2019-11-06 22:14:30,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:14:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2019-11-06 22:14:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1588. [2019-11-06 22:14:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2019-11-06 22:14:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2070 transitions. [2019-11-06 22:14:30,397 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2070 transitions. Word has length 56 [2019-11-06 22:14:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:30,398 INFO L462 AbstractCegarLoop]: Abstraction has 1588 states and 2070 transitions. [2019-11-06 22:14:30,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:14:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2070 transitions. [2019-11-06 22:14:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:14:30,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:30,407 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:30,408 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:30,408 INFO L82 PathProgramCache]: Analyzing trace with hash 653011577, now seen corresponding path program 1 times [2019-11-06 22:14:30,408 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:30,409 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898023583] [2019-11-06 22:14:30,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:31,890 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 499 [2019-11-06 22:14:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:31,948 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898023583] [2019-11-06 22:14:31,949 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:31,949 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:31,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086684283] [2019-11-06 22:14:31,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:31,952 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:31,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:31,953 INFO L87 Difference]: Start difference. First operand 1588 states and 2070 transitions. Second operand 7 states. [2019-11-06 22:14:33,332 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 505 [2019-11-06 22:14:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:41,870 INFO L93 Difference]: Finished difference Result 3593 states and 4735 transitions. [2019-11-06 22:14:41,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:41,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-11-06 22:14:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:41,885 INFO L225 Difference]: With dead ends: 3593 [2019-11-06 22:14:41,885 INFO L226 Difference]: Without dead ends: 2603 [2019-11-06 22:14:41,889 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2019-11-06 22:14:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2580. [2019-11-06 22:14:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2019-11-06 22:14:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3414 transitions. [2019-11-06 22:14:41,984 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3414 transitions. Word has length 57 [2019-11-06 22:14:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:41,985 INFO L462 AbstractCegarLoop]: Abstraction has 2580 states and 3414 transitions. [2019-11-06 22:14:41,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3414 transitions. [2019-11-06 22:14:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:14:41,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:41,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:41,989 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:41,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2124615921, now seen corresponding path program 1 times [2019-11-06 22:14:41,990 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:41,990 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886877648] [2019-11-06 22:14:41,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:43,407 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 499 [2019-11-06 22:14:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:43,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886877648] [2019-11-06 22:14:43,454 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:43,454 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:43,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085289844] [2019-11-06 22:14:43,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:43,455 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:43,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:43,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:43,456 INFO L87 Difference]: Start difference. First operand 2580 states and 3414 transitions. Second operand 7 states. [2019-11-06 22:14:44,790 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 505